namespace ConsoleApp3._1021;

public class UserExtends : UserTest
{
    public override void M1()
    {
        Console.WriteLine("M1方法被调用");
    }
    
    public override void M2()
    {
        Console.WriteLine("M2方法被调用");
    }
    
    public override void M3()
    {
        Console.WriteLine("M3方法被调用");
    }
}